joe if it was me and you can afford to do it this is what id do .
1.your closed deck block tested and checked over fully
2.lateral performance 2.1 kit
This kit has been tried, and tested over the last 3 years, with it achieving fantastic results for those looking for exceptional performance, and value for money.
John Moreby hold the current record, having achieved 570bhp, and 10.3 second 1/4 mile times !
The kit can be adjusted to suit donor block, and heads.
The kit contains the following:
EJ257 2.5lt STI crank
Lateral/Wiseco custom 2.1lt piston kit, with rings, & up rated pins
Lateral custom Fast Road "H" section stroker rods ( Long Version)
ACL "Race series" main bearings, phase 2 (set)
ACL "Race Series" centre main thrust bearing (For use on modified closed deck blocks)
ACL "Race series" big end bearings (set)
Multi layer steel head gaskets (pair)
Block o ring set
Please call for parts, and build options.
Price: £1495.00 + vat @ 20% (£1794.00 inc VAT)
Normal Price: £2154.00 inc VAT
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3. get a reputable builder to assemble the engine
4.get your turbo rebuilt
5.fit higher flowing injectors
6. map it for 95 octane
if you cant afford to spend on the above build ,bring it to a reputable builder for a standard rebuild with uprated pistons and rebuild your turbo and map for 95
either way should be reliable but the first obviously has scope for mods if you ever decide to