Ever thought about building an MGB with almost four times the horsepower of the original? Thankfully, these days you don't have to drop a small block (or a similar powerplant) into anything yourself.

This is where things really started to heat up in British Leyland’s battle of the brands, because the Triumph Stag is the reason why the V8-engined MGB came only in GT form. Despite Ken Costello’s ...