You can run a header and cat back exhaust, 65mm TB, FRBB kit, Ported and polished head, bigger valves, Crower springs and retainers, Forged pistons and rod, change the compretion ratio, Queffe LSD, 406 gears, lightend flywheel, better clutch, nitrous, water & methenol injection and SCT tuning. Thats about it.
positive displacement blowers like the JRSC like short rams better. Sure the air that is sucked in is a bit hotter, but if you put on a CAI, the extra work that the JRSC has to do to pull air through the longer tube is more detrimental to power. As for cooling, no there is no "solid" way to cool the JRSC.
The JRSC is a positive displacement blower, which means it moves X amount of air per revolution. If you put an exhaust on the car, it will still only move X amount of air. If you modify the head, it will still only move X amount of air. Etc... etc...
So power gains from head work, block work, exhaust work are relatively minimal. There is a Big boost kit, look at that first. Then look at water injection next (you're only choice for intercooling for reasonable cost and effort). Then you can look at turning up the boost, at that point you'll want to possibly build the block and so on
yeah everyone tells me that theres more power out there to be had. thing is, i don't need it. call it blasphemy, but I'm only interested in a lil pick me up. Plus the kit that focusownerskid is selling has the water/methanol kit on it, so it's cooled. the only reason I truly asked is so that I know that I'm safe with the JRSC on a pretty much stock engine. I plan on beefing up the tranny, so that won't be a problem. I'm lookin at the whole picture as well and not just the now.
The JRSC will never really put out the power to worry about internal stuff. Short ram intake, TB, FI cams/cam gears, water injection, exhaust (race header preferably), and a smaller blower pulley are the main JRSC mods.