[ITSv40]

It should be a straight swap.

The original car is a 2.0lt manual and the donor engine is a 2.0lt manual, so the engine/gearbox combo should be a straight fit. Both cars are ME7 so no issues converting from a manual throttle to electronic.

The only thing I can see being different is that Volvo increased the power output on the 2.4 and T5 engines in 2003 - the 2.4 increased from 197bhp to 200bhp, the T5 increased to 245bhp. Not sure about the 2.0lt, but the 2003> is 163bhp. Given the small increases in power - this would be achieved by tweeking the ecu rather than redesigning the engine.

I would check the power of the 2001 engine against the 2005 and also check the part numbers on the respective ecu's- if they match then no problem, if not, use the 2005 ecu instead of the original. You know that the 2005 engine runs with the matching ecu so should also when fitted in the 2001 coupe.

Doing the swap should be a rewarding and cheap result, if getting done professionally, I would opt for repairing the coupe and part out the convertible.