What problems can spout adding a vtec head to an LS

I was in a tuner shop asking questions, and the guy told me to do the head swap. When I came in the second time he said "To be honest with you many people run into problems down the line with the Vtec LS. It's like frankenstining the head into the car!" Is this true?

thats a tough question, depends on how well the tuners are and how much money u got. a good setup can cost u 8 grand.

did someone say frankenstein? LSfranks are harder on crank bearings

What!!! 8 Grand For What? A Good Head Swap?