V-TEC head on an LS block?

I heard the only difference engine-wise between the gsr integra and ls is the v-tec head....if this is true is it possible to upgrade an ls block by adding a gsr head? and what cost would it be to do that? thx

You can adapt a B18C1 head to a B18A/B block, but they are most certainly not identical motors short of the clinder head. There's a ton of info online and at hybrid-perf.org concerning the LS/VTEC hybrid, try searching around there.

http://www.c-speedracing.com/howto/lsvtec/lsvtec.html
http://www.geocities.com/thelsvtec/
http://www.geocities.com/whiterabbit_59/lsvtec/lsframe.html
these should keep ya busy for a while