My avatar roadster is my 95th car. We have replaced 2 others since then. I have learned some extremely important lessons over the years and to me there are 3 that are paramount in any restoration or preservation. All 3 of them drove my sons crazy but I held firm and they came around they are now believers. First, make it stop, Second, make it steer, and Third , make it go. Use quality parts ALWAYS, and by taking care of the safety issues (even if they appear okay originally) you will ensure you have a trustworthy vehicle. Once that is done, then proceed with the engine and drive train. Lastly, make it pretty. Rust may be unsightly but unless it is structural in nature, it's ugly can be lived with. Running off the road or worse because the steering or brakes failed is out of the equation if you follow the 3 paramount rules I listed. Through all this you will become intimately knowledgeable about your vehicle and then will know if there are "improvements" needed. Plus you will have the satisfaction that you can get in and drive your truck wherever you want, dependably. Unless you have done dozens of rebuilds, do not even consider doing it. As said before so well, most become stillborn disappointments and you take a bath financially to boot. I have a dear friend that is a lifelong hot rodder and starter on the short course at Bonneville for 30 years until his retirement a few years ago. Just as he leaned in to flag a car off on a run, he would tell the driver, "Be safe, Have fun, and Go fast" with your 6 cylinder, going fast isn't in the cards. But follow the other rules and safe and fun will last for lots of years!