if its a 340 your limited to 1.4 or 1.7, 1.4 is 70hp and 1.7 82hp but the 1.7 is a livly car imo
but if you want a bit more there is the volvo 360! 2.0 with 100hp-+ which uses a volvo redblock engine and can be tuned alot even turboed without much hassle.
also the 1.7 is good for clio 16v...