wow bored welsh lad, awesome info there! As you can tell by the thread I'm looking at spending under a grand by running low boost. For under a grand I could do this and that is the whole aim of the project, lots of ponies for under a grand. I'll speak to DH and see what he thinks, he did recommend using wideband, so I'll talk to him bout this and also to Danny, see what he thinks. Either way I'm gonna buy a complete engine on eBay and stick new seals and gaskets on it and port and polish the head. I'll stack headgaskets to relief pressure on the engine. I was thinking of sticking some ARP bolts on that engine anyway.