This is what Lund engines are advertising
A new 450bhp 4.5L V8 complete with Opcon supercharger and Motec engine management system - £6500.
A new 340bhp Stage 4/5 tuned 4.9L V8 complete with matched inlet manifold, injectors and Megasquirt efi - £5500.
And RPI have
5.2 Full Engine (Includes). the Ultimate in Rover V8 Engine design Spec., with Cross bolting, dynamic balancing, heat treating, Ultimate big valve heads, race pistons and rods, and a one off Crank ground from Billet, This engine also includes T-Top (top-hat) Liners, thus offering the ultimate in race reliability whilst achieving the maximum in Engine capacity 330 - 380Bhp
£6500