I have just bought a 81 244 DL it has hust 104K on the clock and is a one
owner car, with very little rust. I have some questions i would like some
help vith:

1: Do i have to run leaded gas?

2: The engine starts and runs fine but it has a slight hunting at idle and
when cruising at low revs, what could be causing this?

3: The engine is a B21A and although it has a lot of low en torque that's
about it, it hates revs and acceleration is almost as good in 4th. as in 3rd
gear. What can be done to get som more top and mid range power out of it? I
was thinking of changing to a K cam and also adjust the timing for more
advance; how much? Is it the carb that is the restriction, or is the
cam/head flow. I will not be willing to put major money into this as this
car is just for transportation