Stock Engine??

I think I have a stock engine on my 86 GT. The original Upper & lower intake manifold's are on, as well as 58MM TB. E6 Part numbers. The TB, EGR, both intakes, Valve covers, and heads have a blue colored sealer. Is this stuff original?? Or has this stuff been off?? The water pump looks to have been replaced. The sealer on it is an orange/red color?

Anybody remember what a stock engine gaskets and sealer looked like when doing s H/C/I or TB swap??

Thanks!!!

I'm gonna pull the motor before it hits 200,000 miles. It has 165,000 on it now. Sounds high, but it's a 20 year old car so that's a little over 8,000 miles a year. I'll replace it with 87+ stuff.

I may need to do a compression test on it. It "feels" fine, but I have a feeling the valve covers haven't been off this car. I've had it almost two years and put less than 5,000 miles a year on it.

I put the K&N on. It had the original air-box when I bought it from a wholesaler.

I have no clue as to if it's been rebuilt or not. But it seems it hasn't