So basically there's about 1 1/4 inch difference between the 'standard' and the sky-tec which should be enough, even though tight. I covered the 'dish pan' someone had cut into the firewall at some time previously as it was pretty crude and made out of aluminum anyway which I didn't think was a great idea with the fuel tank right behind the firewall. I thought there might have been a difference in tube thickness between the short and long mount but the 'reliable source' says the thickness is the same.
I'm still 'twittling my thumbs

) in San Antonio before heading back north in a couple of weeks and hopefully getting back to the project. At least I can formulate my 'plans' down here.
Mike