Allante intake manifold. The 4.5 and 4.9 are great motors . But, the inlet and outlet water pipes rust out that run underneath the engine and are no longer available.. It's a shame someone doesn't make those aftermarket!
have someone cycle the key on and off as you tap on the motor of the abs pump with a brass drift or long extension. The pumps tend to freeze up when not being used. I have a 99 deville with 200K on it as a Winter car and cycle it often and it still works great!
I can't remember base timing on those with the aldl plugged in 6 degrees with the engine warm. Those balancers have a tendency to move spin a bit so you never know where you are timing wise.