MKII Challenge Car vs. 818 R, can you fit ?

[FFRSpec72]

So with all the various folks having issues with fitting in the 818 and having to do all these odd things to fit, so I compared my 818 "R" with my MKII Challenge car and the winner is:

(1) Floor to top of rear roll cage bar, challenge = 41" 818=41"
(2) Floor to highest point on side roll cage bar, challenge=34" 818=34"
(3) Center console to side, challenge=21" 818=21"
(4) Front firewall to rear firewall, challenge=54" 818=55-6.5" (for fuel tank) 48.5"

So the interior room is about the same except the 818 has 5.5" less leg room if you move the firewall back and use a 6.5" wide fuel tank. I will gain the most of the 5.5" back as I have a 20 degree layback seat in the challenge car (which uses 8") and will use a 10 degree layback seat in the 818 R (which uses 4.5"). So for me (6'0 and 175lbs) it will be an even swap and I have no issues with the room in the challenge car.

[flynntuna]

Thanks for posting the #'s, had a feeling they'd be close. I guess the biggest difference is the lack of the trans tunnel taking up the space down the center.

[FFRSpec72]

Thanks for posting the #'s, had a feeling they'd be close. I guess the biggest difference is the lack of the trans tunnel taking up the space down the center.

Yes as the lack of a normal trans tunnel has 2 benefits. (1) this where all my electrical, brake, clutch and maybe cooling lines are going (2) this gives me more seat width room. The challenge car tunnel is wide and tall and takes up more room. I will have the same room if not a little more as I have in my challenge car. The issue here is that this is my daughters race car and she is only 5'4" and 105 lbs so this will be like a 1962 Cadillac to her

[AZPete]

Good point. There's been no talk here about expanding the driver's footbox, pedal benders, dropped floors or wearing narrow shoes like on the roadster forum.