The stock rear is 50t and the heat/warrior has a final ratio of 5:1 which calculates to around 20mph at full 3600 rpm. As a heat owner, you know it has awsome take-off. Going direct from clutch to rear (eliminating the jack shaft assembly), you will have a 10:1 and calculates to 40mph, but take-off will suffer greatly. A good compromise is to split the difference and go for 7.5:1. Cheapest and easiest method is to replace the rear. 36t for a #420/#41 chain fits the bill and indexes nicely on the bearing hub. Shorten the chain, make the clearance bracket and away you go, I get 30mph, which is plenty fast for me and still has great take-off. Nice mod if you don't want to mess with the governor or spend the $$ on a TAV converter.
BTW, the pic of the bracket looks like the chain is close to the inner side, but it's just the camera angle. There is at least 3/4" gap there.