Will a c-4 bolt up to a 4.6 mod motor? Or how much for a built aod? Or should I go with a turbo 400?
You forgot about th th350 and powerglide.
What kind of hp are you making and are there any power adders?
AOd and 4r70 are very durable transmissions. They also natively support all of your engine choices, are relatively inexspensive to build and provide direct bolt in function without alot of hassles.