What years should I look for? options?
What should I avoid? Is the 4.1 engine the only one available?
Thanks! Just started to look and came here first for information!

 

MY personal recommendation?
stick to the 4500 engine cars, 1989 to 1992 ...

furthermore, in addition to the 4500 engine, the 1990 1/2 to 1992 have also some soft top "refinements", air bags, traction control that you may find attractive.

our thread on Allante details may help you ...

the Allante XYZ facts
https://www.cadillacforum.com/m_6551/tm.htm

also, do take a walk in our "Allante Cyber Museum"


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I agree. have owned both the 4100 and 4500. 4.5 much more power and a nicer driving car.