Hi Guys,
Am considering purchasing the following stroker kit or similar:

EAGLE 355 HOLDEN STROKER KIT (NEW) - eBay V8 Engines, Engines, Components, Car Parts, Accessories, Cars, Bikes, Boats. (end time 20-Apr-10 21:36:13 AEST)

Currently have headers, exhaust, CAI.

Was wondering how much you would expect a mechanic to charge to install all the above parts.?
Would that kit make much of a difference and is it worth the money??
Cheers guys