MK2 with SB 427?

[RaceDeck]

So, I am at that point where I have to pull the trigger on the motor setup for Superformance MK2 GT40 -
I am a big guy at 6'3 and do just fit in the cockpit.. but that has been with the Small block cars. The Big Blocks I have sat in take up some of the firewall space in the cockpit and it's either I don't fit or not fit well.
My question is - are there any negatives with a very high-level build aluminum sb 427 ( from kinetics)? resale ? From a pure performance and drivability, the SB is the most reliable and honestly better performer.. Other option is to switch to the MK1 ( not preferred )

[Mark IV]

Jorgen,

No difference in the firewall space with a Windsor block, you will not lose any space. You can trim the foam under the seats to increase head/leg room at a small coat of padding comfort. The "tall man" seats they sell are just that so don't pay extra for them.