Here for you a Blasto J210. As the 210 number suggest, is a merge of a Blasto J90 (as primary engine) with a Blasto J120 (as afterburner). It contain two anti-weight block, so the mass is about the same of a single engine, and two minimal air intake to make it self-sufficient.
Abviously is not a "legit" engine, because the anti-weight blocks, but it has no change in fuel consumption or in thrust.
I think it look cool, isnt it? ;)
UP