hey guys and girls ive just got a sierra xr4x4 1989 for £450 . its been stood for about 4 years has every mot and tax disc , private number plate and shed loads of history which also shows that it had a new ford engine fitted 65000 miles ago. the arches has no rust or bubbling and the panels are mint theres just one ding in the hole car. on the downside the drivers side sill has a hole in so i taken it to a friend who has stripped it all back and has informed me that i need a inner sill outer sill and front floor pan. ive been trying to source the parts and can only get hold of a outer sill so ive brought that. im having no look what so ever trying to source a inner sill was thinking i could replave the floor with a 1mm steel plate has anyone fabricated a inner sill? or has anybody got one for sale? also when i have the car m.o.td is it best to keep it standard cus im also debating a twin turbo conversion but im unsure what i will need n how easy isit to get the bits. help will be appreciated thankyou for reading