Are you aware of how powerful an R1 is?
Lets go with your 2 year time frame and assume that the R1 was about a 2006. It has 180HP, and weighs about 173kg.
Lets apply some numbers to a 240sx.
We can assume a weight of a 240sx to be about 1224kg. You added weight with the turbo system and possibly and body kit you may have put on for all that drag reduction you needed. So lets assume 1235kg.
The Power to weight ratio of the R1 is 1.04:1.
To get the same ratio from the 240sx, you’d need ~1285hp going to the ground.
That is assuming you get as much traction as the R1, and believe me, you won’t. 240s have enough problems with traction with 400hp.
No need to rag on the Sr20 guys…different strokes for different folks.