No Standard Production V6 Granada/Scorpio MK3 had a manual box (with the exception of the 4x4) although a small number of special orders were done for the Granada, but nobody knows if there was ever a Scorpio manual special order (those that have delved into the programming of the ECU via FDS or WDS have found an option to switch to manual mode.)
Hybrid boxes must be made in one of two ways.
1) 2.5 TD box from scorpio using the XR4x4 front case.
2) 2.0 Box but removing the mainshaft and replacing it with the XR4x4 one and front case.
BOA vs BOB.
BOA is the simpler engine using a single long timing chain, and one tensioner. It has a fixed inlet system that is fairly restrictive. The big weakness is failure of the chain tensioner blade which will result in the chain jumping and wrecking the engine. Replacement blades and nylon covers are available.
Wiring is fairly straight forward, you must retain the Lambda sensors for correct running (one per side) and you will not need CATS for the IVA. the emissions gubbnings can be junked (although some report better economy with them on) .
There are two types of loom, early cars had a single fusebox and this has an easy couple of plugs to hook up the engine loom. Later cars were built like the scorpio with twin fuseboxes and this is not as easy as you need to make up relay holders and join a number of wires that were part of the fusebox.
Using BOB cams (with correct 95 wahsers) and Vauxhall V6 injectors will give a bit of extra power/torque.
BOB. It's more compact in size although a smidgen taller, it uses one chain per bank with a tensioner per bank. It's more complex but there are less reports of problems.
Using the original wiring requires the use of a lot of original loom to retain the PATS anti-theaft system (some say they can get round it but no details). The alternative is to use BOA loom and ECU although an RPM switch will be needed to work the VIS valve which is important for good smooth performance. The loom in the engine valley suffer from insulation breakdown so should be checked.
Againg you will need to retain the Lambdas and now the CATS as well. Original scorpios have 4 Lambda sensors but the rear pair are just for monitoring and won't cause a problem if removed.
TT
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