Hi people im new here just need a bit of help

sell the chevy and buy another slant six to put in it... that would be the cheapest and fastest way to get it running. Changing to the 350, you'll have a lot more into it than just the free engine. (exhaust, trans, all the mounts, driveline, larger radiator, etc)... you will have a lot of that with a Mopar V-8 also except there are way more people who have put a Mopar V-8 into them! (not to mention a lot more people willing to help you do that!!)