I'm told there is no such head casting number 14102183... I'm also told they do exist... I don't see the 14102183 on many list online, what I do see 14101083 and also a 14102193 and the 191...... I'm told the 183 is an 87 to 95 GM 350...It's a TBI head I'm told with swirl ports... Here is a few pics I took of what the number I am seeing on right bank head... I've checked nearly every site possible and still no listing for the 183 heads.... Any suggestions ,information would be great, debating on rebuilding current engine or just pulling a junk yard motor... If the latter what engine block cast number and year, make and model it would be in may be a route I go... Any suggestions would be appreciated... My first engine rebuild fyi...No, I do not have the engine block cast #..