Thanx 4 the info Wotland. NGK BP6ES are different spark plugs, right? What is the advantage to be gained with them? My mate Sven's 50th already sports a set of Magnecor plug wires. Please enlighten us further, what does Gaseous Sequential Injection do, who makes it, where do we get it, and also what's a top oiler!? His 50th is now used as a street car but we had to get it properly dirty the once, Sven has since acquired a Matzker-modified double-Africa-veteran TD5 to play in the mud.
I've not posted video to YouTube or similar yet, might take me a couple more days 'til I get it sorted as I'll have to edit our off-road movie down to bite-size chunks, but if you help us make his 50th roar like yours I'll endeavour to entertain you with our novice mud-plugging

Can you provide a photo or two of how "Y-Pipe Conv. Asm. part# 23821 for Range Rover 90-93" fits under the Landy? Was it a bolt-in fit or did it need tweaking? Many thanks in advance
PS Off-topic, my older P6 is now almost totally dismantled and has been delivered to a Classic Resto specialists where it awaits extensive welding and metal-replacement, the younger one (to serve as a parts and engine donor) gets started now and then in the lock-up to keep the cobwebs at bay, on twin SUs with BAK needles and a Kent 214 it still can't match your 4.0 litre for bark.
'72 Rover 3500, 6yr back-to-the-bare-Base-Unit nut & bolt resto finished in time for her 40th birthday June 2012!