... 300bhp in a mk4 cheap msl:

well you need to be thinking along the lines of 1.9cvh on cossie management, and you won't be doing it cheap unless you buy a big spec engine secondhand

-> don't know a massive amount about the ins and outs of ZVH's

- and a zetec turbo capable of lasting more than 5 mins isn't going to be a cheap build...

buy something jap and turbo'd

and 300bhp FWD is a bit of a waste IMO