Mithra weigh a 911 engine, even a 2.2 or a 2.4, they are very heavy.

Just as a base line, a 220hp 3.2 air cooled Carrera engine weighs approx 480lbs. To get more than 220hp can get expensive.

New pistons /barrels/intake/cams/valves/ignition,headers
etc ..plus labor can come close to 20K US easy,and that doesnt include a used engine to start working on.

With the replicas suspension design and aerodynamics
270hp would be dicey I think. And in the rain it might
be a moving tombstone. Lots of hp needs lots of rubber and lots of wheel width. Replicas arent known for that.

You can get a flat 4 VW engine to rev. A roller crank,
light weight flywheel,the right combo of crank, pistons, cam and rods with a EFI that has 4 throttle bodies w/stacks and a crankfire ignition can make it a scream like a banshee from hell.

Hey, its not a car for ultimate Ring times, its a fun car. Sometimes with fun cars you dont need ultimate power or F1 car like handling to have fun with on a daily basis.

Check out current state of the art hot flat 4 VW engines, you will be amazed!