Well, honestly, umm.............. The Rb motor makes more horses but takes a little more to configure in your automobile. You will most likely be better off buying a front clip since you will need certain things like the engine crossmember and speed sensor. Your driveshaft will have to be shortened. The engine might sit a little high so the hood might have to be adjusteds also. You will need to do your research. Luckily the RB swap is getting just as popular as the SR swap so there are plenty of web pages to help you in your research. There are companies producing the hybrid driveshaft and other swap items you would need to perform the procedure.
I highly recommend if you don't know too too much about cars to go SR. Because RB parts are a little more rare and alot of customization needs to be done i.e. cooler pipes, exhaust, wiring, weight calculations due to the heavier RB motor, stopping power needed for the RB. It goes on and on, your doing the right thing, RESEARCH FIRST!
