The range rover sump (ER477?) used from about 1992ish onwards
3.9 ltr, 4.6 ltr etc is designed NOT to use a gasket, a clean surface on both sump and block and a uniform bead of RTV silicone sealant is all that is required.

Simon at Mulfab

Simon @ Sifab.co.uk

Sifabtemporary@gmail.com