Couple of questions

70wayfarer said
am at present looking at converters and just wondering what I should or need to be looking for. 50/50 street strip. recommendations on brand and supplier would be great.

As said above, contact a reputable converter builder, PTC is a good choice, give them ALL of the cars specs.

Engine build and components, weight of car, intended usage. They can build one specifically for your combo.

http://ptcrace.com/

There is a spec sheet on that link that will give you an idea of the info needed.