4g63 head swap

[99 gst spyder]

bs belt broke and i guess knocking issue. thought it was lifters but not. not sure what the issue is but it's coming from my head. maybe bent valves or spung bearings. bead head.
how would i go about swaping my head to another 4g63 head. what would i need? i'm planning on getting a complete 4g63 head and swap it in. what mod do i have to do?

 

[scooter24]

i think the idea is to have a 6 bolt short block with a 2g head so you do not have to re wire anything to make it run. also i think the 2g head has better air runners anyways.