Are you one of the two converted pickup owners in the UK VOC? If so why not
ask me for help. I am in the VOC for that purpose and can point you in the
right direction for a complete head replacement to 1993-on standard.
For petrol conversion the fuel tank will need a complete in-tank pump
installation with wiring and you will need a complete main fuel pump with
filter on it's mounting tray (goes under car passenger side floor (RHD),
also with associated wiring and fuel relay. It is not an easy task as you
will also need an ECU and ICU, Ignition power stage, coil and engine looms.
You will need to swap the air filter and battery housings with associated
hosing changes and wiring change.
Either get a refurbished 1993+ head with slightly longer cambelt and fit it
to your engine, a complete engine from 1993+, or buy my 15,000 mile block
and fit a new head (if any damage to your piston crowns). I also have a ZF
gearbox to suit if needed.
Possible cost of petrol conversion is in order of £2000 (DIY basis). Look in
Exchange & Mart for heads/complete engines (around £1000 including fitting,
£400 for head only).
All the best, Peter.
700/900/90 Register Keeper,
Volvo Owners Club (UK).