Thank you for your question bluebmw
As RSKM5 already mentioned his car is slated to have closer to the 800hp mark so obviously at that much rwhp/trq the main variables are going to be gearing/diff/tires/hook up.
In the case of RSKM5 we have worked with him to solve these and are confident the only remaining issue will be the drivers anticipation of the green light.
Speaking of which both his and Abdullas sections of the site were updated late last night.
You can view their progress
HERE
Take Care