Looks good and you do what makes you happy but a body colored firewall always looks better. Black is dark and drab unless the truck was black. You should have rolled the pinch weld at the firewall/floor for more clearance and beat the firewall back for your distributor clearance (but do it so it looks nice). Also I would never step back in time and replace fuel injection with a troublesome, never tuned quite right, hard to start cold, too rich or too lean carburetor for nothing. An LS swap would have been the best of both worlds! Easy to tune, easy to start, easy to change. All around better than a carbed small block anyday of the week. I have built 3 lowered v8 swapped S10's and one convertible s10 way back in the day. Also an S10 Blazer rear diff from maybe a 2000-2005 will have disc brakes and would be a great swap into your truck.