Son and his 62 c10 help advice

[bigwin59]

Gave my son a 62c10 long bed. It had the original in line 6 and 3spd manual trans.
I had a 350 in good shape so he is putting it in. He wanted an automatic transmission. The 350 has a t350 on it but figured might look for a 700r4 to give him little more mpg. Bought one. He wants the shifter on the floor and taller than the short shifters for cars. Any idea where to find these type shifters? I have looked around and all I have seen are short ones.
He has been working his but off trying to get it ready to drive his senior year. It won't be pretty but will be a driver for him.
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