Thanks for that,.
Here is the easy way to do the Dash, Fiberglass RHD
And here is a Photo of a GM Delivered RHD Cab. in the 70's GM would supply them to Holden, GM's Austrailan Divison as LHD Drive, once here Holden would then Convert them to RHD, They used a Fiberglass Dash and Had Cover Plates that just Bolted in to cover any unused Holes in the Fire Wall. Im not being that lazy.