383 2pc. rear main in place of a 1pc. rear mian block

[stevejohnson48]

1990 Chevrolet K1500 Silverado 8Cyl5.7L - Engine
2 bolt rear main block in place of a one peace rear main block in 90 k1500 w/ 5 sp. manual trans ,clutch throw , T.B.I.s
I'm Trying to engine swap a 2 pc, rear in place of a 1 pc .clutch to crank, and the stock tbi set up. int, and exh. manifolds hook ups and other related swaps ,with . Any help would be appreciated
so,is the clutch throw the same (distance from the bell housing bolt flange)to the crank flange,somebody indicated that these early model heads will have to be changed to accommodate the exhaust and intake manifold,what about the computer in this 383 swap (370 HP>385 torque )looking for a friendly chip also ? Steve /////....../////can you provide a chip or will I be able to use the 6 pk jet?on the performance end of the selection and premium gas and get the performance that I should expect? ,and will I be able to install a 350(5.7)2pc. rear main block in place of this 1 pc. rear main block 90 K1500,with a 3500 NV(weak I know but at these time its all I have to work with)10.4-1 1/8-10 spline?,can I get a exturnally balanced 400 flywheel that will work with this clutch,and is the distance from the crank flange to the bell housing bolt flange the same on both motors(clutch travel input shaft pilot barring ect.)or can I use a Flywheel Counterweights or counter balance? please advise Steve//////...../////I'm working with a 1990 K1500,5 sp, manual trans with 342 gears and 265-75-16 tires,going back with the stock intake,exhaust,and TBI,may be a 350 tbi to 50mm from stock 44.please advise