I ran a 750 composite body Street Demon on what has to be the biggest oven of an engine compartment, an A100 van with the engine under a dog house where heat soak can be intense. I always lifted the cover after shut down to vent, but the heat was still radiating and soaking into everything. Never ever had a problem running, during stop and go traffic, or restarts shortly after shutdown. No fuel percolating from the boosters or accelerator discharge nozzles. Running a 750 DP now for other reasons, but the Street Demon works great. Excellent throttle response and power. Only had a linkage issue (ford kickdown contraption on throttle was causing some binding, I cut it off problem solved) and the choke flap on my sons 625 kept sticking closed in the tower, hyper extending for some reason. Put a small washer under a nut on the carb stud to act as a stop for the flap. Problem solved. Not sure if its a common issue with them. Its affordable. But performs nonetheless
