The internal panels on my car, i was going to make them as every one else does out of Alu sheet, but i can get ABS 3mm sheet, in carbon effect finish, would this be ok to use as internal panels or do i need to use alu for safety / IVA, please help as i need to let the supplier know today if i want to place an order.

You don't need to use anything at all!

I covered my tunnel with ali sheet. I used 6mm abs sheet for the boot cover. I find in the sun the abs expands alot and warps between the fixing screws. So my advice is to use ali sheet.

I used the ABS that MK supplied. No problems with it distorting.

However I think a skin of ally, riveted and bonded to the chassis adds a degree of stiffness to the chassis.

So, if you are after ultimate lightweight, go naked.

For an bling finish carbon / carbon effect.

For increased stiffness use ally!

Simple!

Mike

Ally it is then, i want the chassis to be strong, well as strong as it can be. Cheers guys for the fast replies as always