What transmissions other than the existing A4LD will physically fit the 3.0L engine in your 1989 aerostar?
hate to burst your bubble. but the A4LD is the only thing that will fit in your van..Ford only made a few other differant styles that year in Rear wheel drive. And all of those are too big.. Unless you are wanting to switch to a standard transmission for it.. But that's alot of work..
Macs Transmissions (Houston, TX)281-394-4951Macstransmissions@gmail.com
On a 1996 Ford Aerostar : Follow the top radiator hose from the radiator to the engine coolant thermostat housing on the engine . The thermostat is INSIDE the housing * in the case of the 4.0L , the hose connects to a metal pipe that is part of the thermostat housing that is bolted to the front of the engine