takes power to run the blower thats part of the game 2inch belt will be fine there is a photo of the smaller blower on my photo galley here that you can see there smaller blower. i a dealer for them and the blower case is machine out of a solid block so it.s a billet case very nice setup .as for holleys i done them but for the money i like AFBs/edelbrocks they may be abit lower on power who cares you be making alot of steam any ways and there very user friendly as for vac hook up under the carb base or BDS sells a valve that makes power brakes work but so will a vacuum pump on pcv i use open breathers i like the moons they work the best