Yes your pistons are going to be the limiting factor with your engine and unless you are able to retard the timing when activating the nitrous, 50 to 75 HP may well be the limit of extra power you can add.
If you can retard the timing and if you add one of our progressive units (which will ease the load on your motor at low rpm), you'd reliably be able to add more.
Assuming you're going to be limited to under 100 HP for the immediate future, this is the best/most suitable system for you (keep in mind that you can trade up to a more powerful system, if you eventually improve your pistons at a later date);
http://www.noswizard.com/car-nitrous-ki ... s-kit.htmlIf you'd like more details of the options we can offer you please complete our contacts page or send your details to
lisa@noswizard.com please.