Thanks for the info Grenade. I had sent emails to Novarrosi and RB Concepts to help in my inquiry. This was their suggestions of the motors, what would be my best option:

From RB:

01014-RALLYV2 RB Rally engine V2
E01014-RALLYV2 RB Engine RALLY V2 with In-line set pipe 2092
RODAGE Pre-Run engine RB Concept


RB CXR CIRCUIT SUPER LONG STROKE 9
4 REFERENCES


RB CXR CIRCUIT SUPER LONG STROKE 9...
3 REFERENCES


RB CXR CIRCUIT LONG STROKE 7 IELASI...
3 REFERENCES


RB CXR CIRCUIT SUPER LONG STROKE DIRECT...
4 REFERENCES


From Novarossi:

FLASH RALLY.21PT/A

LOCO/PS


MY LHS has an RB TM928 as an option as well.

I am only driving on asphalt in a straight line so top speed is what I am after.

I appreciate all the help my friends!!