well i have been looking at b20b's and reading about them and i have found that the clynder walls are week. but i have also herd they have great pull. if i did this i would like to put the motor on the bottle and i was wondering what kinda shot it could handle with a block guard? i have serched many threads about b20s and nitrous but dident see anything about one with a block guard. can they help that much? well thank you!!!!