i am going to be getting a late model LS or GSR(probably 99-01). a couple of my buddies have a LS and a GSR. i've riddin in both and the LS seems to have better torque and the GSR seems to have the vtec topend.

so the debate is on either getting the GSR or getting an LS and converting it to LS/vtec to get the best of both. i figure id save the extra money from the GSR and spend it to make an LS/vtec. so what is all involved in doing the head swap and how does the LS/vtec compare to the GSR?
thanks