Garage sales are often good places to get good used tools that can sometimes be better than new. One tool I would buy new would be a torque wrench as they can go bad and are used to set fasteners to a specific tightness. Doesn't have to be special, Harbor Freight has one (3/8 Drive, click type) on sale for $15.00, down from $20 through this week; timing light for $30 (might find one at a garage sale); look around for a "one-man" brake bleeder kit (HF has a few with pumps, but mine is just a small container with a one way valve and tubing); feeler gauge set ($5.00 HF); tie rod separator forks (gonna need them to replace the boots/seals... kinda spendy at $60, may find at garage sale); a breaker bar (usually 1/2" drive so you'll need an adapter to 3/8" OR have some 1/2 drive sockets to go with, all metric of course) $22 new at HF, garage sales are good; a serious hammer (meaning heavy duty); set of metric wrenches (thinner is better to get into tight places), ratchet and socket set, and a few extensions (I assume you already have some of these things); an electrical test light and/or a multimeter (super cheap at HF); a wire stripping and crimping tool; a few different sizes and style of locking pliers (HF, garage sales); may need a set of flair nut wrenches for removing brake lines if needed (metric, I think they are 8mm and 10mm, might be 11mm); a good set of screw drivers; a flat blade putty knife for scraping gaskets; a second set of Jack stands; some variety of wire brushes are nice for cleaning stuff off of things in small places; a pair of mechanics gloves can be nice, and some eye protection is a good idea. Oh, and what I believe is a 27mm socket (the one I use is 1 1/16", slightly loose) to more easily rotate the engine by hand with the crank shaft bolt (others need to confirm if it's 27 or 28mm, the 1 1/16" will work).
That's all I can think of right now... others are welcome to chime in on their suggestions or often used tools to get you rolling. Might consider a compression tester as that will help determine the engines condition some, and confirm the head gasket if it's a bad leak ($30 HF, should do the job). If you don't have a HF near you, I've bought a number of things off Amazon, most were good (cheap $15 compression tester was crap). Garage sales are great; I still have some of my Craftsman tools I got more than 40 years ago at a garage sale for cheap... hope this helps!
