Kruz has offered very sound and right on the money advice ,Good tech he is. I still cant picture what this van looks like ,but sounds like a transverse motor ,unlike a astro. Sounds more like a Lumina van. With the transverse van I Generally rack-up the van and get the plugs from below. I fully understand the 2 dog bone setup upfront however ,I believe the cowl ect ,would be in the way even if you could rock the motor. BTW is done by you keeping the engine in park and releasing the e-brake and have a buddy rock the vehicle until desired movement of motor is done ,then apply ebrake to hold it there,works for me. He absolutely correct ,plugs & wires and bad heater in the o2 sensor ,replace all that and reset the computer(disconnect batt for like 15 min apply brake pedal once). As for UltraLiberty,Im not talking about 1985 chevy or even 90 ,Im talking about 95 and newer they are ALL ,I say ALL junk.Buy one and find out for yourself pal. Hell look at the poor professor...................... Ive never riden in or had the misfortune to work on such American made Junk.You put 100k on a chevy ,you will have 2-3 items in the passenger compartment completely broken ,for unknown reasons ,1 or 2 window motor/regualtors break. 1-2 o2 sensors go out,those 100k plugs will code up on your butt at 60k,the water pumps will fail at 80k,the fuel injecters,fuel pump will go out before 100k ,and those babies are $100 a piece plus massive labor to replace ,especially on Vortec. Transmissions ,Power steering ect ect ect........ GM is making complete junk year after year lately ,for the $$$$$$$$$$$$ they have had 100 years to perfect the car and they decide to live off of the american name GM and milk the american public for every dime they can. I am American and white ,If I say Honda or Toyota(lexus) its because they make the best cars ,period.