im interested in the datsun 510's and wanted to get one and do an engine swap. i was first looking at mabey doing a sr20det swap but since i dont know too much about these cars it seems like a lot more work and money than i was hoping. if anyone could explain the amount of time and money of a do it yourself sr20det swap i would appreciate it. thanx. aslo i was reading and i think it might be a little easy and cheaper to do a ka24de swap and then maybe add a turbo, is that right?

can anyone at all help me with these questions?

Depends on what motor you go with s13 s14 or s15 you can buy mounts intercooler radiator and pay someone to do the Harness but there is a lot more than that to it suspension needs to be Upgraded and so do brakes

just dont forget to modify your brakes when you do the upgrades.its really very important.