Get it done by a professional DONT DO IT YOURSELF.
You got to go into the ECU ( does it have one??)
Better to use the sesqential type system.
Stephen Plie writing in the Sunday Times circa 1991
" a motorist decided to convet his volvo estate car to LPG.
The work he was asuured was straight forward and could be done in a
day...... He proceeded as advised.The car was always garaged at night
Two weeks later at about 0200 hrs there was an enormeous explosion
- the roof of the garage ended up 100 yards away
-The volvo had been blown to pieces
-The neighbour's front room was obliterated
-The original lpg car tank was found two miles away "
This is a true story.
The V8 is deal for the conversion. The people mentioned , convert v8 RR's all the time..
Hope this helps.