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Update on 70 Coupe Project: OK...so I've owned the car for a year now and you already read about the electrical issues early on. Over spring and summer, I resolved a terrible overheating problem that in the end I attributed to just a plain old radiator and a collapsing lower radiator hose and got it purring like a kitten with a terrible breaking up / weak spark issue. I tried to resolve the dreaded leaking FMX transmission, but think it's still leaking from pan. And finally, last weekend I replaced the 52 yr old 85 lb spring rate rear leaf springs with Detroit Eaton 70 Competition Suspension 138 lb spring rate springs and dual exhaust shackles and got on my old school Keystone Klassic wheels with BFG Radial T/As. Love the rear stance and the ride is great. Think I'm going to cut 1/4 to 1/2 coil out of new front springs to bring it down 1/2 to 1 inch. Very happy with progress and soon moving on to stripping off the original ugly green paint. Going with a bright pearl white or white metallic. And also new carpet, front seat covers, and dash pad. Having a great time working on an old mustang again. Cheers to you all until next update.

I live in Ridgefield WA. Just north of Portland OR. I bought the car as a "drove when parked" situation near San Francisco. Had no idea if I could get it running. 351 cleveland 2V. not original engine. After entirely new fuel system from gas tank to carburetor, and a fixing a massive leak at the shifter on the FMX, I have it running and driving. I've spent about $8,000 at CJ Pony parts already just on the interior parts (interior was completely trashed.) Still thinking about how I want to attack the restoration. 20211106_170749.mp4

I would check with Dan at Chockostang. http://www.chockostangclassicmustang.com/

What part are you describing when you say quarter scoop? I'm picturing the 69 sportsroof rear quarter fake scoop. I have one of mine out now to tighten the black inserts because they are loose and rattle a little but there is no chrome around these parts. Edit - thinking now that this is the coupe trim?

I have a 408 Cleveland with a Tremec TKO 500 5 spd that I bought from MDL. I have an Eaton True Track anti-slip with 3.70 gears and Yukon (N case like) casing. The Tremec and the Yukon have 1350s. When pushing 500+- HP, MDL recommended the following (custom built) driveshaft... It was not cheap, but then again neither is the cost of repair should one blow up as a result of under sizing it. Aluminum Driveshaft 3.5" tube, 31 spline forged yoke, 1350 U-joints (under 700hp up to 58") High speed balanced * Drive shaft is measured and built once the transmission has been installed.

Thanks for the advice guys. I searched eBay, craigslist and facebook across the country and finally found a Mach 1 set for sale 2000 miles away. Was about to pull the trigger and deal with the inconvenience and pay the shipping when I decided to do a WTB locally. I found these Grande seats just a few miles away. It is the first dollar I have spend on parts for the car. I expect to spend many more dollars in the future (sigh).

The only reason I ask is the Grande seats always seem wider in the pictures. Is the foam different? This is the Mach 1 I picked up.