alternator belt for 1/ 4 mile

if you get the part number I would love to have it! As for now I just carry the water pump pulley with me and old belt in case of an emergency. I have really no time on the car since I installed the little motor. Again waiting for my son to come to town before I go blow up the car! Lol what was the shortest time the motor lasted? Like do you think I'll make the 5 miles to the track about 10- 15 passes and the five miles back before the motor goes out?

I keep my water pump pulley and a spare belt in the car too....just in case :D. My buddy's electric water pump drive quit after just a couple months of use if that helps. Mine is currently going on 3 years of off and on use...sometimes when I know I'm not going to be racing for a while, but I am going to be driving on the street a lot, I put the regular pulley back on just for piece of minds sake.