mark vii aqua jet turbos

anyone know a cheaper good turbo that will work on top and sides of machine

I haven't confirmed this but someone told me that Mark VII uses British pipe thread on those nozzles. If true, I guess that's their way of ensuring your "loyalty" when you buy parts. You might want to check into that before you try to find a replacement.

The only difference between "British" pipe thread and US is the former isn't tapered and the seal is made with a washer, gasket or o-ring. You can thread male NPT (tapered) fittings into female NPS (straight) threads and it will seal if enough sealant is used. I've never tried male NPS into female NPT.