Welcome to the board mate, post some pics up when you get the car where abouts are you based?

ZVH is a zetec bottom end with a CVH head [cvh is found in older fords].

Theres NO point doing that to yours because its a complete Zetec engine, with a better twin cam head on it anyway

They did two 1.8 Si's, with 105ps [103bhp] and the 115ps [113bp].

Start with an uprated exhaust and airfilter, sort the suspension then go for a chip and maybe cams

For big power, don't bother with the 1.8, swap it for the 2.0 zetec and either turbo it or add throttle bodies

Price wise for the turbo, I'd have thought you'd be looking at LEAST the £2k-£3k including, engine, turbo, intercooler, ancilliaries, machine work and new management.

I would have thought it would cost ALOT more if you;re not doing any of the work yourself

My advice, smoke the 1.8 si around for a couple years, build up a no claims bonus then buy one thats already been done, at a fraction of the build price