74 Scamp gen 3 swap help
Yes the kits are expensive.
There is a multitude of decisions you need to make. If I were you I you I'd read through a number of build threads.
For example the Alterkation by Reilly Motorsports is probably the slickest way to install the Gen III Hemi. But it is also the most expensive, at roughly 5K for the kit.
At the same time there are guys who make their own mounts, hack the wiring harness, and cut apart and weld up a stock pan. So you can do this cheaper, not cheap but cheaper.
Best bang for the buck is probably a 2009 and later truck motor. 390 Horse, with header and a tune your knocking on 425.
Read, read read. For example the car motors look better, but the low mounted ac compressor interferes with the motor mount, and low mounted alternator can hit the frame rail seem.
Good luck