i just made up a hat to go over the top of the carby and this worked fine with no leakage etc. mind you this was on a webber tho. It should be alright as long as the throtle shafts arnt worn and leaking. i dont no how you would get a boost signal into the float bowl tho. anyone no an easy way as the webber i had already had a breather from it as it was for unleaded. if you set it up right im sure you will be more than happy with its performance. just be gentle on your diff