inline 6 swap to SBC350

[NicoSlam]

A buddy of mine has a 64 chevy truck with a stock 350. He wants to swap his 350 for my inline six in my 69SWB. My biggest questions are will the engine mounts be located on the same location for both engines? does the cross member have the same location? Both trucks are standard so from the trans back, will anything change? I haven't started measuring yet but want to get an idea of the issues I will come up against.

thanks