Having just done one I can tell you my experience: I spent about $3k US. That was for the longblock B16B and a bunch of refreshing (full suspension and linkages, axles, flywheel, brakes, etc., all used but refurbed). It's been almost 10mos. since I started, but I did a full rehab, brakes, susp., interior and was often waiting for parts b/c I'd find something to replace. If I did just the engine swap it would have been a lot faster and I only worked on it sporadically as I was busy and traveling a lot. My lesson is everything takes way longer than you think it should if it's your 1st time. Especially if you've just got hand tools like me, 10yr old bolts corroded in place are a bear. I snapped 3 1/2" breaker bars on one axle nut alone. Then there are all the bugs and kinks to work out once it's installed, mostly sorted now. I'd say the swap alone minus all the other restoration I did, maybe 20 hours, give or take. Could probably do it in one long day, or over a weekend now. It's a great learning experience, but don't expect to have your car back on the road in a weekend.