thank you everyone for the help. To clear things up yes i want to keep my 5 speed trans, and take my z24i out to put in a z24i engine which had an auto matic trans on it. Then i can always have a rebuilt engine on the side lines. And with 440 000kms I would suspect I'm not getting many more years out of it. lol its pretty bagged. No want to change to a different engine no matter if its better or not, just keep the same configeration as it came with (z24i and 5 speed ) and hopefully modify and tune alittle more the back up engine each time i have to swap. Maybe when i am seventy i'll be up to 200 horse power lol. I'm hoping for ten to twenty more horse power per engine swap. Also any performance tips would be nice. I'm hoping to have headers, better exhaust, ported head this time round. I have ported the head( mostly just cleaning up alittle opened up and straighter air path just where port and chamber meet) Was going to look at intake for a once over( its not going to help much from the quick look i did on it. The headers are tubular ones off a vauxhall i plan to try to use(free) but they'll be some cutting and bending work involved. There much lighter! I have time and not much money. The exhaust is yet to be thought about possibly but it will be minus cat and have performance muffer(most likey old and free)from whom ever i can. Hey dad i'll take your old race exhaust too I thought it was a package deal with headers! lol But if cheap mods are possible or just time on my end, i would like direction or advice to help me along. I thank all who take the time to post , or those who get a giggle from this project. I understand tuning more than just in general being a mechanic. Yes i'm totally backwards. Truck Norris is Truck Norris thats just the way it is