Research. Then research some more.
What type of car do you want? A race car, Daily driver, Drift pig, Rally, Bush basher, Dune monkey, Hill climber, etc. What style of car do you like? Ute, coupe, convertable, hot hatch, jacked up, lo rider, etc. What's your budget? Whatever it is, triple it.
Your first aim has to be working out what you want most
, then you can work out how
to get as close as you want.
My example, I wanted a classic (mk1) mini cooper with a modern engine for hill climbs and daily driving. I sourced my options out, got a decent condition car (1968 mini) then worked out which engine would be best for me. I had to toss up between 4 different ones (G13 + T, 4E-FTE, B16, K20) and ended up going with the one that required the least screwing around with engine placement (given how freaking small the engine bay was). Mines stuck at about 80% done due to the simple fact I had a kid, but I've also run out of money so it'll take me a while longer
Simply working on an engine is good fun, my previous car was a 97 Pulsar SSS with SR20DE in it. I did as much as I could to get the N/A love flowing but wished I'd just gone turbo
It's fun, rewarding, but if you want a car that you can just drive without worrying about breaking down, don't bother -_-.
You have any particular likes?