coolant leak and running sluggish

[Mv7fd]

i bought an 84 bronco 2 the other day has 72 thousand miles has the offey intake and holley 4 barrel and msd ignition and its an automatic. this thing is slow doesn't seem like it has that much power of the speedometer is really off has stock tires on it. also i have a coolant leak on the drivers side not sure if its the water pump or the timing chain cover

 

[RonD]

What does the exhaust color look like and feel like?

Could be clogged exhaust, REV engine and feel exhaust flow out the tail pipe, if pressure flattens out as RPMs are still going up you have a restriction.
Vacuum gauge is $25 and a very helpful tool for diagnosing power issues, including clogged exhaust.

If exhaust is grayish you are running too rich, if engine pings after warm up you are running too lean.
Is Choke Plate opening all the way after warm up?

If exhaust is whitish color you are burning coolant