340/drivetrain build advice

I used this exact build, a TF904 with Hughes 3000 stall, Transgo TF2, and a set of super stock springs; 8-3/4 with 3.91 Richmond gears with an Auburn sure grip.

Dynoed(bench) 410hp and 411lb lbs of torque.

In my 69 Dart I ran 11:98@112 with drag radials @ 18lbs

The machining is the most important part along with cleanliness.

http://www.compcams.com/information/Articles/Type/Chrysler/CC_MM0201-001.asp

If I didn't have that 340 I most assuredly build a stroked 360 and I would have had these guys build my motor based on my budget.(I want to go 125mph in the 1/4..who doesn't?)

http://www.immengines.com/home.php

Plus they are members here.