TBH mate , id say turbo it , But thats what i do to all my cars
if you were askin Fast ford this question they'd say some shit about a filter , zorst and cam , £500 for 15 BHP , whoop de fookin do !!!!
Your limited mate , if u dont want to fork out on a nice S2 , and your happy with the car just bite the bit and get the engine swaped ,
it's not to hard ,
If u wann call me ( 07879 648 628 ) ill be able to explain a little better than typing shit on hear all night , as long as you have all the bits befor you start then its only a few days graft .