On 560sec.com/bulletinboard there are some threads about weight and brakes... I'm teetering on the edge of doing a swap, but I can't bring myself to do it yet. Going from a 944 engine to an LS1 you only gain (I think) 50 lbs... I can't find the post where one of the members did a four-corner weighing of the car. LT1s are a little heaver, around 120 lbs total. It's not an insignificant amount of weight, but... I don't think it's a dealbreaker.
