Need oil dipstick replacement, cant find anywhere

[amikk97]

when I got my truck from my grandfather, he said the oil dipstick got lost. now, since I am in the process of cleaning up the engine, and the oil is about 5 years old, I think its time for an oil change, however I don't have a dipstick and I don't want to over/under fill the engine. ive looked all over the internet for one but all I find is weird dipstick and tube combos. anyone know where I can find an original oil dipstick for an 87 sierra r1500?