Some of the guys here have spent a lot of time junkyard shopping to make things happen cheap. I have done my fair share, my choptop I fixed the cracked head, converted to 4x4, lifted 5” of suspension and including the purchase price had $1,600 ish into the original build. Granted, everything is more expensive these days, but it took a bit of fabricating and sourcing random parts.
I’m doing a bit of the same with my 5.0 swap. Dropped a couple hundred on a donor, been picking up random parts for a couple years, fabricating what I can. It’s still not going to be cheap, I’ll have a few grand into it all told, but I’m not just throwing the motor in, I’m rehabbing the motor (gaskets, plugs, water pump, etc), swapping both axles and replacing brakes and seals and stuff, rebuilding the suspension, etc. Shooting for basically a rebuilt truck at the end that shouldn’t need much for a few years. I did something like this with my F-150 years ago sans engine swap. Stuff needs fixed and replaced now, but I got about 10 years without it needing much beyond gas, oil and tires. Is a few grand worth 5-10 years of just driving it? I think so, it’s cheaper than buying new…