putting a 408 in a 3/4 ton Dodge with 4.10 gear and 36" tires.
weighs about 5400#

9to1 , 340 heads w/ hard seats,whiplash cam 223/236,750 Street Demon, 1-5/8 headers with 3"collector

would you recommend 3"exhaust?

what total advance?

will ecu for that year be adequate?

and what is the extra wider plug in from distributor for?