Sounds a great project. Will be watching this with interest. You won`t need a large capacity engine. Martin built my engine or rather rebuilt it and it`s about 430bhp. If I want anymore I`ll have to change exh and inlet manifold and there isn`t much room. Then you have to cool it, both air and water temps......

Trust me 430bhp and 620kgs is quickish.

What gearbox/diffs you planning on using?

PS. Martoon loves a kit car