1st Gen Camaro LS7 DSE engine mount??

[colorado80439]

So I've picked up a 68 Camaro and have an LS7 in transit.
Focusing on the DSE subframe but no commitment.
Reading the install instructions from DSE is see there is a choice of engine mounts. 060401 puts the engine in stock position 060404 moves the engine 1 inch back.
Here are the questions.
1. Using mount pn 060404 (needed to use the very proud, but beautiful, DSE headers) am I going to have significant tunnel fabrication for a tremec 6??
2. Using mount pn 060401 and the ultimate LS swap header (swept back header) will I have any significant tunnel fab w/ the T56?
2a. Will the stock dry sump oil pan fit without sitting lower than subframe or clearance issues with the subframe? If not, who makes a dry sump pan that works?
2b. Looks like plenty of clearance for the steering rod but haven't seen pics, an issues there?
2c. Will the stock Z06 low A/C compressor mount work with the 060401 engine mount? or am I headed for a $2500 front runner anyway.

Any other words of wisdom would be appreciated
Thanks in advance Dave