On the c4 conversion look up paul newman chassis in the US you will see hoy it's done.
When you set up the ls1 move it to the left you should be ale to get 30mm more room on the RHS
There was a Set of RHD dash panels on eBay last week
If you use standard chev mounts and make you adaptor plates out of 10mm plate you will have
1.5 degs angle on the engine trans which will suit the car .
What oil pan do you intend on using
Exhaust manifolds of a L98 will fit the engine bay perfectly
Pm me your email addy I will send you photos on my I stall that I have been doing
this will give you some ideas.
http://nswcorvettes.com.au/forum/index.php/topic,8633.msg1045941484.html#msg1045941484The thread looks to be in reverse order
Bfit