Thanks for all the info. I think I am safest with the BTM, HEI and Blaster coil.
Boost is addictive.. for the money I'd suggest that you go the MS route.
Its possible to use the MS to run a water/methanol system that is proportional to boost. The parts to build the water/methanol system can be sourced at the wreckers.
Yes you have to learn something new - but there a 1000's of MS users now and good chance there is someone nearby to help you get going.
You can still use that new HEI dist. with the MS. I did for years.