Are you using a Engine Cradle Brace which spaces your sump down up to 12mm? This plate is the final touch! 
 
RB Sandwich Plate 12mm Extended
 
1 x 12mm Extended RB sandwich plate Zinc plated Blue/Silver
The Lower section of this plate is extended to contour the RB26 Sump as it is shifted down further from the block brace.
 
Optional Gearbox Extension Pieces
 
1 x 20mm thick Aluminium Bracket to suit RB26 GT-R 5 Speed Transmission Bell Housing
The additional Aluminium Bracket is to be welded onto the Bell Housing, this allows for the original bolt holes to be re drilled and tapped up to 12mm lower depending on what brand block brace is being used. 
 
 
Various Ways Of Bolting The Sump Back to The Gearbox
- With the option of adding 1x 20mm thick Aluminium Bracket to weld to the Bellhousing so you can re drill the gearbox holes 12mm Lower in the Bellhousing and reuse the existing sump holes.
 
OR
 
- Weld your sump holes and re drill the holes higher up and reuse the existing Bellhousing holes.