I just got a 79 pick up for free and decided to take it as a sign and build it. The problem is that I have never paid any attention to Toyota stuff and really dont know where to start. It has a 4 cyl. and a 4 spd. (L43?) What t-case would this have? I saw advance adapters has a 5:1 low range kit (21 and 23 spline) for $395. Will this fit? I also have a Chevy 4.3 Vortec that I would like to put in. How hard of a swap is this? I plan to run between 35"-37's on it. Will the drivetrain hold up? Thanks.