Supercars won't support big engines.

All 3 supercars have a similar problem. They all do not support big engines. I can fit a V8 and a Inline 4, but it has to be the smallest size for the game to accept it. They won't "fit" a Inline 6 at smallest size.
With a V8 in a Small 10s Supercar, I only managed it to get up to 370 BHP and 240 LB-FT Torque on a Crossplane V8 (With Turbocharger).

^That is the biggest size I can make with a V8 for it to accept. Any bigger and it will say "Engine size too big"
Sorry if this topic has already been posted, but it's a big problem.
Cars with this issue:
10s Supercar (Large)
10s Supercar (Small)
With a V8 in a Small 10s Supercar, I only managed it to get up to 370 BHP and 240 LB-FT Torque on a Crossplane V8 (With Turbocharger).
^That is the biggest size I can make with a V8 for it to accept. Any bigger and it will say "Engine size too big"
Sorry if this topic has already been posted, but it's a big problem.
Cars with this issue:
10s Supercar (Large)
10s Supercar (Small)