Why did you pick a bt4 Cummins for a swap? Its a bread truck motor. Low rpm, not as reliable as other small diesels. The only thing it has going for it is high torque. You could easily fit a bt6 or a 6 cylinder Mercedes
1991 Dodge Caravan over 400,000 miles and still going strong
1998 Toyota 4-Runner 2 1/2" lift and big ol' knobby tires
1986 IROC Z Camaro (project car #1)
1996 Firebird (project car #2)
2006 Cobalt SS (hubby is currently going mod happy on this one)
1959 Ford F100 which is the only one I have a picture of at the moment.
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wow. which one is your favorite?