If you fancy more power you need to spend some real dosh my Boxxer 427 was lovely to clean with it just had problems, GP cleaners get some good tms in you could even trade your prowler against one I'd start saving now good place to start is cancelling Xmas presents my kids are on the naughty list for not working on a Sunday but one tip is always make sure you get the mrs a present it is money well spent over the year.
Shaun