driveshaft length

[carlp]

hello,

i am new here and will post a couple pictures of my 71 truck tonight.

anywas the truck is a '71 long wheelbase fleetside with a straight 6 and 3 speed manual on the floor. it has a two-piece driveshaft and all stock suspension.

i am collecting parts for a motor and tranny swap. i am putting in a 69' marine block 350 with steel crank, flat top pistons, chevy bow tie phase II heads, performer rpm cam, and an edelbrock tunnel ram with 2 450 holleys. all msd ignition. the transmission is an ATI manual reverse TH-350 freshened up with TCI parts. also running an ATI 3500 stall converter.

anyways my question is concerning the 2 piece stock driveshaft. will it be too long or short for the 350/Th350 combo, using stock motor/tranny mount locations? i am going to be shortening the bed and will buy a new driveshaft then. just dont want to spend the money twice.

the truck is my driver and cant have it down for more than a few of days.

appreciate any help,
carl