New Head???

I,m fitting a Mallossi 172 to my T5 this weekend,should i also fit a new head and if so should i buy a matching Mallossi one or get a T5 head and mill it out.The scoot will be used for Rallying so will be on the Motorways quite a bit.:shoot1: [:dance3:]

It would probably be more sensible for you to buy a matching head, then you can be sure that nothing is going to go wrong but if you know an engineer or an engineering shop nearby then it would be cheaper to get them to lathe the head to match.