Nick,

As much as I would have liked you to continue to post to the thread I started (it gave the thread good traction), your build deserves its own thread. When I had the 383 sbc I almost replaced my exhaust for smaller diameter because that would have added more to the low rpm grunt. I'm glad I didn't now that the 427 is in place because my 2.5" is about perfect for it, and I see your running the same for your 427. Your specs said yours is about 25 HP more than mine at 526 HP, so you are in for a wild ride. The more I drive mine, the more I get used to just how much road I need to see ahead of me to pass slower traffic on my 2 lane mountain roads. I know you have mentioned a manual trans maybe in the future, and I'm sure impressed with whatever ride you have that uses a 3 disc clutch. I have a Caddy CTS-V with the 6 speed manual and a 2 disc clutch and love the "Toyota" light clutch action that is connecting 556 HP to the wheels. I have considered a 2 disc for the Track-T. About what might push you over the edge for a manual is, unless addressed in the TH-350's build, unwanted downshifts. I'm guessing your 32 tips the scales at something less than 2400 lbs (1090 kg), and your enjoying a cruise at say 30~40 mph (49~66 kpm), top gear, then romp it. If the auto drops to 1st gear, your certain to just smoke the tires. In a manual, you choose what gear and it stays there no matter what your vacuum is doing. Can they build your TH-350 so that you have a choice of if it will downshift or not?