also if u want it to be SAFE...u need to take the bottom end apart and put some arp rod bolts in there...and depending on what way u want to go..all motor or n/a maybe consider changing the pistons to some high comp p30s (jdm b16 pistons) arp head studs would also be a good thing to have....i think u should honestly rebuild the whole bottom end to be safe..but u can take ur chance on that...or if u want i have a ready built ls bottom end..thats vtec readya(i have one pm me)....cuz ur also going to need a vtec water pump and oil pump...i mean u can use the ls...but thats not very smart since its not intended for the high revving vtec motor...try not to cut corners and do A LOT of searching before you get this done..there are millions of sites out there with ls/vtecs and b20vtecs to learn from...